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kbuild: allow assignment to {A,C}FLAGS_KERNEL on the command line

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It is now possible to assign options to AS and CC
on the command line - which is only used for built-in code.

{A,C}FLAGS_KERNEL was used both in the top-level Makefile
in the arch makefiles, thus users had no way to specify
additional options to AS, CC without overriding
the original value.

Introduce a new set of variables KBUILD_{A,C}FLAGS_KERNEL
that is used by arch specific files and free up
{A,C}FLAGS_KERNEL so they can be assigned on
the command line.

All arch Makefiles that used the old variables has been updated.

Signed-off-by: Sam Ravnborg <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Hirokazu Takata <[email protected]>
Signed-off-by: Michal Marek <[email protected]>
This commit is contained in:
Sam Ravnborg 2010-07-28 19:11:27 +02:00 • committed by Michal Marek
commit 80c00ba942
6 changed files with 26 additions and 7 deletions
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4
scripts/Makefile.build
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@ -118,7 +118,7 @@ endif
modkern_cflags = \
$(if $(part-of-module), \
$(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \
$(CFLAGS_KERNEL))
$(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL))
quiet_modtag := $(empty) $(empty)
$(real-objs-m) : part-of-module := y
@ -251,7 +251,7 @@ $(obj)/%.lst: $(src)/%.c FORCE
# Compile assembler sources (.S)
# ---------------------------------------------------------------------------
modkern_aflags := $(AFLAGS_KERNEL)
modkern_aflags := $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)
$(real-objs-m) : modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)
$(real-objs-m:.o=.s): modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)